package com.ck.server.controller.test;

import com.ck.common.config.TuTukConfig;
import com.ck.common.constant.AjaxResult;
import com.ck.common.constant.CacheConstants;
import com.ck.common.constant.Constants;
import com.ck.common.utils.id.IdUtils;
import com.ck.common.utils.jwt.RedisCache;
import com.ck.common.utils.security.sign.Base64;
import com.ck.system.service.SysConfigService;
import com.google.code.kaptcha.Producer;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.concurrent.TimeUnit;

/**
 * @author ck
 * @date 2023/3/31 11:29
 * google图形验验证码操作处理
 */
@RestController
@Api(tags = "图形验证码接口")
public class CaptchaController {
    @Autowired
    SysConfigService configService;
    @Resource(name = "captchaProducer")
    private Producer captchaProducer;
    @Resource(name ="captchaProducerMath")
    private Producer captchaProducerMath;

    @Autowired
    RedisCache redisCache;
    /**
     * 生成验证码响应给前端
     */
    @GetMapping("/captchaImage")
    @ApiOperation(value = "生成验证码")
    public AjaxResult getCode(){
        AjaxResult ajax = AjaxResult.success();
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        ajax.put("captchaEnabled", captchaEnabled);
        if (!captchaEnabled)
        {
            return ajax;
        }

        // 保存验证码信息
        //生成uuid拼接前缀存入redis中
        String uuid = IdUtils.simpleUUID();
        String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + uuid;

        String capStr = null, code = null;
        BufferedImage image = null;

        // 生成验证码
        String captchaType = TuTukConfig.getCaptchaType();
        if ("math".equals(captchaType)){
            String capText = captchaProducerMath.createText();
            capStr = capText.substring(0, capText.lastIndexOf("@"));

            code = capText.substring(capText.lastIndexOf("@") + 1);
            image = captchaProducerMath.createImage(capStr);
        }
        else if ("char".equals(captchaType)) {
            capStr = code = captchaProducer.createText();
            image = captchaProducer.createImage(capStr);
        }
        /**这里做测试验证码改为5分钟有效时间*/
        redisCache.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
        // 转换流信息写出
        FastByteArrayOutputStream os = new FastByteArrayOutputStream();
        try
        {
            ImageIO.write(image, "jpg", os);
        }
        catch (IOException e)
        {
            return AjaxResult.error(e.getMessage());
        }

        //传入uuid，后续验证码 验证时从redis中取得code
        ajax.put("uuid", uuid);
        ajax.put("img", Base64.encode(os.toByteArray()));
        return ajax;
    }
}
